DIY Chatroom Home Improvement Forum

DIY Chatroom Home Improvement Forum (http://www.diychatroom.com/)
-   Electrical (http://www.diychatroom.com/f18/)
-   -   electric water heater rewire (http://www.diychatroom.com/f18/electric-water-heater-rewire-83801/)

dghowery 10-13-2010 09:41 AM

electric water heater rewire
 
In the rewiring of 50gal water heater replacing the 10-2 copper with 10-3 copper wire. the water heater had only two connecting wires; black and red. The white wire from the original 10-2 going to the heater was attached to the grounding screw noted on the top of the heater. In replacing with the 10-3 should I again attach the wht. neutral wire to the grounding screw and run the bare ground to a cold water pipe?

Jim Port 10-13-2010 09:48 AM

A two conductor cable + ground is all that is needed for a water heater. You do not need a neutral, just two hots. The white will get re-identified as a hot with black or red tape or magic marker.

I do not know how yours was functioning with a hot connected to ground.

Do not make any connections between a water line and the wiring for grounding.

dghowery 10-13-2010 10:07 AM

so the wiring for the electric water heater is red to red, black to black and white to ?

Jim Port 10-13-2010 10:15 AM

There is no white used on a straight 240 volt unit. The white in the cable is used as a hot conductor and is re-marked to show its new usage.

jbfan 10-13-2010 12:11 PM

Cap off the white, and connect the bare to the ground screw on the water heater.

secutanudu 10-13-2010 01:18 PM

Why are you replacing 10-2 with 10-3?

darren 10-13-2010 06:06 PM

black to black
white to red
bare to the ground
Mark the white red with a marker or electrical tape.

Just because it is white does not mean it has to be a neutral.


All times are GMT -5. The time now is 08:14 AM.